Inside PPro you can set any number of clips by selecting them in the Project Bin right clicking, Modify, Audio and set number of channels to 0. Only the video is added when used, but you can change the number of channels to bring the audio back if need be.
As for logging/transferring/importing audio and not video you can do this in Prelude. Select clips and ingest/transcode to .wav or .aac or whatever.